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Tuesday, 21 April 2015

Types of Pipe Joints

Types of Pipe JointsPoints : types of pipe joints, spigot and socket joint, expansion joint, socket or a coupler joint, flanged joint, nipple joint, hydraulic pipe joint, union jointPipes are generally joined to vessels as of which they convey the fluid. As the length of pipes
available is partial, thus different lengths of pipes contain to be connected to suit some
exacting installation. There are different forms of pipe joints use in apply, but mainly general
of them are discuss under.
1. Spigot and Socket Joint
2. Expansion Joint
3. Socket or a Coupler Joint
4. Flanged Joint
5. Nipple Joint
6. Hydraulic Pipe Joint
7. Union Joint1. Spigot and Socket JointSpigot and socket joint is mainly use for pipes which are hidden in earth. A few pipe lines are
laid directly as distant as feasible. One of main features of this joint is its elasticity as it
adopt itself to little changes in level due to completion of earth which takes put due to
weather and other conditions. In this form of joint, spigot end of one pipe fits into socket end
of other pipe. The left over space among the two is filled by a jute rope and a ring of lead.
While lead solidifies, it is caulked-in strongly.

2. Expansion JointPipes moving steam at elevated pressure are generally fixed through means of increase joint.
Joint is use in steam pipes to start increase and reduction of pipe line due to adjust of
temperature. In turn to allocate for change in length, steam pipes are not strictly clamp but
support on rollers. Rollers can be set on wall bracket, hangers or floor stands. Expansion bends
are helpful in a long pipe line. These pipe bends will coil in also direction and eagerly
contain themselves to small actions of definite pipe ends to which they are attach. The copper
ridged increase joint, (a), is use on short lines and is suitable for partial service. An
expansion too identified as gland and stuffing box arrangement is mainly satisfactory while the
pipes are well support and cannot sag.

3. Socket or a Coupler JointThe majority regular way of joining pipes is by way of a socket or a coupler. Socket is tiny
part of pipe thread inside. It is screw on half way on threaded end of one pipe and extra pipe
is then screw in remain partly of socket. In arrange to stop leak, jute or hemp is wound about
the threads at end of every pipe. This kind of joint is generally use for pipes moving water at
low pressure and where generally smallness of size is mainly necessary.

4. Flanged JointIt’s one of mainly extensively use pipe joint. Flanged joint can be prepared by flanges cast
essential by pipes or loose flanges weld or screw. Two cast iron pipes by integral flanges at
their ends. Flanges are attached through means of bolts. Flanges contain seen standardised for
pressures upto 2 N/mm2. Flange faces are machined to make sure correct position of the pipes.
Joint can be prepared leakproof with insertion a gasket of soft material, rubber or convass
among the flanges. Flanges are prepared thicker than pipe walls, for strength. Pipes can be
strengthening for elevated pressure duty through increase thickness of pipe for a small length
as of the flange. For even high pressure and for large diameter, flanges are added strengthened
with ribs or stiffners. The ribs are put among the bolt holes. For bigger size pipes, divide
loose flanges screw on pipes are use instead of integral flanges.

5. Nipple JointIn this form of joint, a nipple which is a small part of pipe threaded external is screw in
inside threaded end of every pipe. The difficulty of this joint is that it reduce area of flow.

6. Hydraulic Pipe JointThis type of joint has elliptical flanges and is fixed firmly through means of two bolts. The
oval flanges are generally using for small pipes, upto 175 mm diameter. Flanges are commonly
cast integral by pipe ends. Such joints are use to take fluid pressure unstable as of 5 to 14
N/mm2. Such a high pressure is initiate in hydraulic applications similar to riveting, pressing,
lifts and so on. Hydraulic machines uses in these installations are pumps, intensifiers,
accumulators etc.

7. Union JointIn classify to unfasten pipes attached through a socket, it is needed to unscrew pipe as of one
end. This is at times not convenient while pipes are lengthy. The union joints give the ability
of disengage pipes with minimally unscrew a coupler nut.